molins



W. E. MOLINS CUTTING MECHANISM Dec. 29, 1931. Re. 18,300

Original Filed Oct. 28, 1927 3 Sheets-Sheet 2 u I & I

I i l W. E. MOLINS CUTTING MECHANISM 3+ m ems v h s 5 Dec. 29, .1931.

Original Filed Oct. 28. 1927 Reissued Dec. 29, 1931 UNITED STATES PATENT oFFlcE WAL ER EVERETT nouns, or LONDON, ENGLAND CUTTING MECHANISM Original No. 1,759,018, dated May 20, 1930, Serial No.- 229,479, filed October 28, 1927, and in Great Britain November 8, 1926. Application for reissue filed October 5, 1931.

The present invention consists in providing means for automatically severing a wrapper from a web of material.

This wrapper is suitable for use in the production of a U shaped block ended container which may be automatically formed, for example by the method and means described in U. S. Patents Nos. 1,468,246 and 1,517,307. The container is preferably formed from a thin transparent wrapper of rectangular .shape which is provided at one end with a tongue, for example of sem1-circular formation, and at the other end with a cut-away portion similar in shape to the semicircular tongue at the other end of the wraper.. a p While the invention defined in the claims in this application is directed primarily to the means for severing individual wrappers from a continuous web of material, the purpose of the invention claimed may be more clearly understood by a brief descriptionof the machine of which this cutting mechanism forms a component part and the machine in I question is therefore described briefly hereinafter. i

The invention will be more particularly described with reference to the accompanying drawings, in which Figure 1 illustrates diagrammatically a machine constructed according to the present invention;

Figure 2 iHustrates in detail the wrapping, feeding and cutting mechanisms looldng in the direction of the arrow A in Figure 3;

Figure 3 is a side elevation of Figure 2 showing the reel of wrapping material;

Figures 4 and 5 illustrate in elevation and plan respectively a detailed view of the cuttin device;

Figure 6 is a perspective view of a wrapped packet; and a Figure 7 shows a blank from which the wrapper is formed. I

Referring to Figure 1, a magazine 1 is adapted to receive packets containing cigarettes and feed the same by gravity to. the bed 2 of the machine- Mounted beneaththe bed of the machine is an endless conveyor 3 which chine.

Serial No. 567,081.

a slot formed in the bed of the machine. Each pusher piece 4 is adapted to engage with the lowermost packet in the magazine 1. and carry the same along the bed of the ma- Mounted in advance of the magazine 1 and above the bed of the machine is a from'the web the pusher. piece 4 conveys the packet of cigarettes and the wrapper through 1 folders 8,'gumming gear 9 and heated guides 10 to tucking mechanism 11 which transfers the packet to a rising platform 12. which pushes the packet vertically into a stacker 13. The folding, gumming, tucking and stacklng mechanisms are preferably constructed according to prior U. S. Patents Nos. 1,468,- 246; 1,517,307 1,651,146, and application lSlea. No. 163,520 to which reference may be a Referring to Figures 2 and 3 which illustrate the feeding and cutting mechanisms, the webof wrapping material 6 (Figure 3) is. drawn from a reel 5, provided with a friction band 14, by means of aipair of continuously rotating rollers 15 and 16. The web passes around a guide 17 and between rollers 18 and 19'. The roller 18 is provided with an arc shaped groove 20 which is arranged to en-- gage with a serrated cutter 21, which is adaptedto make an arc-shaped perforation roller 19. This cutter 21 is illustrated indetail inFigures 4 and 5. I

The rollers 18 and 19 are adapted to rotate in the directions indicated by the arrows 7 so that the cutter 21 cooperatingwith the groove 20 in the roller 18 makes an areshaped perforation'or slit in the web 6.

A guide 22 is provided to facilitate the initialthreading of the web through the roll-f ers 18 and 19. The rollers 15 and 16 feed continuously *the perforated web downwardly through the slot 7 in the bed of the at the middle of the web, mounted upon the v machine in the manner described in U. S. Patent No. 1,468,246.

Beneath the rollers'15 and 16 is mounted a cutting mechanism comprising a rotatable blade 23 which cooperates with a fixed blade 24. The cutting mechanism-is preferably; constructed according to British Patent No.

190,202 and U. S. Patent 1,631,879, with. the

blades slightly modifiedin shape so as to portion hereinbefore referred to;

It will be observed in Figure 2'th'at'tlie edge-ofthe fixed blade ;24 -has.two=-portions which slope towards acentralcut-away sec tion thereof which is made equal in width to the-chord ofthe arc-shaped perforations previ'ously mentioned. The edge of therrotating blade 23 cooperates simultaneously with the. twoportions of the fiXedbl-ade which slope' towards the central cut-away section so as to' cut from thesides of the web-and terminate onxeach side :of the tongue; =A .spring interceptor .25 of the type-described in U. S- Patent No.- 1,631',879, is. preferably provided so ;;as .toens ure that the'leadingedge of the web does not foul the fixedcutting blade. V

When the rollers 15 and .16 have fed sufiicient' imaterial Y downwards through the slot 7 in the bed ofv the machine,' the.knife 23-cuts Qsthe web from each sideup to theedge of the arc-shaped perforation; ,When the ;.cigarette packet meets the weblthetension produced .initheweb as it 'is pushed through the folders causesit-tobreak at the perforated: port-ion,

5 sothatthe cut. blankis of the form shown in Figure. 7. The packet passes through the folding, gummingiand tucking mechanism and is-pushed up into. the stacker in the form shown in vFigure .6,tgum being applied as Qfshown at 26. i

-The tongue which broad. faceof the container being of asingle thickness of paper is extremely flexible and any unintentional displacement ofithe same ewill not affect the joint between: the two'final broad end flaps.

It will be-appreciated that-in the-casewof;

a packetenvelop'ed in an outer-container of thmtransparent material, a narrow. strip 27: 0? (Figure 7) of vcolored paper maybe fed with, the. transparent material, in such a manner that; thensameis located at the point where the; tongue and the cut-away portion. are formed, and the tongue :will, in consequence,

."be provided on its under-sidewith a narrow band which willfacilitate the removal 'of the outer transparent wrapper from around the inner packet.

v Thusit will be seen that according to the present invention there is provided i a ma chine arranged'to form a U shaped-block ended container prow'ded withfan extension to the .final'broad-end 'flap 'which is formed 5 r without employing any more 1 wrapping material than is necessary "to *form -a container make allowance forthe' slit-onperforated extends. beyond. the

upon which no extension of the final broad end flap is formed.

7 Having thus described the invention, whatv is claimed as new and desired to be secured by Letters Patent is:

1.1 Adevice for use on a-wrapping machine ofthe type wherein: a batchof cigarettes or likearticles is enveloped in a wrapper comprising means for feeding a Wrapping web,

means for forming 'an arc-shaped series of perforations in the central portion of the moving web, and means for thereafter slittingsaid Web from each edge thereofto the q nearest perforation.

2. In apparatus of the class described, the

; combination with means for feeding a strip ofwrappingmaterial, of means for forming a series of perforations adjacent the central:

portion of said moving strip, and means for severing the strip from each edge inwardly. to the perforated portion.

In apparatus of the class described, the

combination with a rotating member having, a serrated cutting portion, of means for feeding a flexible web across'said member .to form a series of perforations in the central portion thereof, and mechanism for slitting-said web on each side of'the serieslof perfora tion's'. v .7 a

" 4. In a-wrapping-mach'ine, the combination with means for feeding a web of wrappingf material, of a rotating serrated cutter for. en-

gaging said moving web to form a series of perforations adjacent the central portion thereof, and" severing means for engaging, said-web adjacent-the perforated portion; said s'everi'ng means having a width equal to.

the'widthof "the web and having acentral portion equal in width removed therefrom. 1

5. A device for use on a wrapping machine comprising means'forfeeding a webof wrapping material, a rotating element having a to the serrated cutter serrated arcuate blade portion of less width 1 than the web'for forming a series of arcuately arranged perforations adjacent the central portion of the moving web, and means for slitting. the web from each edge inwardly to the arcuately arrangedperforations.

6. A device for'use on a wrapping'machine comprising means forfeeding a web ,of wrapping material, a rotating element p, having 'a serrated arcuate blade portion of less width thanthe web for forming ga series of arcuately arranged perforations adjacent the central portion of the moving web, and a cutting edge having a Width equal to the 3 width of the'web and having a portion equal to the width of the said arcuate' blade por-- ti'onremoved therefrom for engaging and slitting the web-on-each sid'exo-fthe arcuately" arran'ged perforations.

'7? devlce for use 'on a.-:.wrapp1ng.:ma-;

chine comprising means iforifeedinga web'of 1 wrapping materialjla rotatingzelementahaie ing a serrated arcuate blade portion of less width than the web for forming a series of arcuately arranged perforations adjacent the central portion of the moving web, and mech- 5 anism including a pair of fixed blades for engaging and slitting the web on each side of the arcuately arranged perforations, said blades being disposed at an acute-angle to the path of movement of the web.

8. A device for use on a wrapping machine of the type wherein a batch of cigarettes or like articles is enveloped in a wrapper comprising means for feeding a wrapping web, means for puncturing the web adjacent the central portion thereof, and means for slit ting said web from each edge thereof toward the punctured portion, the web being so cut as to leave a frangible connection.

9. In apparatus of the class described, the

combination with means for feeding a strip of wrapping material, of means for perforating the central portion of'said strip, and separate means spaced from said last named means along the path of travel of the strip for severing the strip from each edge inward- 1y toward the perforated portion.

10. A device for use on a wrapping machine of the type wherein a batch of cigarettes or like articles is enveloped in a wrapper comprising means for feeding a Wrapping web,

means for periodically puncturing the central portion of the web While the latter is in motion and separate means spaced from said first named means along the path of travel of the web for cutting the web from each edge to the central punctured portion.

11. In apparatus of the class described, the combination with a rotating member having a portion of its surface provided with web puncturing means, of means for feeding a flexible web across said member to periodically perforate the central portion of the web and separate means for cutting said web from each edge thereof toward the perforated portlOIl.

' 12. In apparatus of the class described, the combination with means for feeding a strip of wrapping material, of means for cutting the strip inwardly from each edge thereof,

and separate means spaced from said first named means in the direction of travel of the web for puncturing the central portion of the strip to form a tongue-like projection therein.

In testimony whereof I hereunto affix my signature.

WALTER EVERETT MOLINS. 

